Portable power station



FIG. 1 is a perspective view of the portable power station showing my new design;

FIG. 2 is a front elevation view thereof;

FIG. 3 is a rear elevation view thereof;

FIG. 4 is a left side elevation view thereof;

FIG. 5 is a right side elevation view thereof;

FIG. 6 is a top plan view thereof; and,

FIG. 7 is a bottom plan view thereof.

The broken lines shown in the drawings illustrate portions of the portable power station that form no part of the claimed design. 

CLAIM The ornamental design for a portable power station, as shown and described. 